DOW COATING MATERIALS

Events

American Coatings Show 2016

April 12-14, 2016
Indiana Convention Center
Indianapolis, Indiana
Booth #2230

ACSLogo2016

Dow Coating Materials is committed to accelerating progress in paints and coatings through customer collaboration, high through-put research and ongoing product development. Our binders, dispersants, rheology modifiers and surfactants are designed to add performance and functionality to architectural and industrial coatings. How can we advance your paint?

Presentation Schedule

    Monday, April 11
  1. 10:30am - 12:00pm

    • Tutorial 7: Biocide Selection Process for Coatings

      Beth Ann Browne, Ph.D., Senior Microbiologist, Dow Microbial Control

      Prevention of microbial contamination in the wet-state and microbial defacement of the dry-film are critical objectives for coatings manufacturers. Biocide selection is complex, and formulators need to consider global regulatory status, sustainability concerns and impact on paint properties, in addition to antimicrobial efficacy spectra including resilient micro-organisms that thrive in manufacturing facilities. This tutorial will guide participants through the biocide selection process. Topics will include: in-can preservation (including a bacteriology overview, detecting and enumerating contaminants, and in-can test methodologies), dry-film protection (including fungal overview, dry-film defacement, and test methods), biocidal chemistry overview, and regulatory overview. Microbial audits of manufacturing facilities and industrial hygiene will also be discussed.

  2. 2:30pm - 3:00pm

    • Session 2.2: Additives Level the Playing Field for Cost-Effective PVA Binders to Excel in Touch-up and Cove

      Tara Conley, Technical Sales Manager, Dow Coating Materials

      Contractors want a paint to cover in the fewest number of coats to minimize the time on the job, have excellent touch up of surface imperfections to reduce customer complaints and have film integrity to provide the durability that their customers' desire. The formulator's first challenge is choosing a versatile binder that will allow for meeting these performance parameters. New developments in HEUR and HASE rheology modifier technology, along with proper pigment selection, allow cost effective polyvinyl acetate polymers to perform similarly for touch up and coverage to vinyl acetate-ethylene polymers. Maximizing the film uniformity and touch up allows for improved applied hiding, both wet and dry, and minimizes the differences in appearance generated from multiple application techniques on the broad wall. Film characterization tools, formulation options, and quantitative demonstrations on the impact of raw material choice, applicator tool, and applied film uniformity in order to achieve the desired applied hiding and touch up benefits will be discussed.

  3. 5:30pm - 7:30pm

    • Poster Session: #14 Role of Hydrophobicity on Chemical Resistance of Fast-Cure Elastomeric Coatings

      Aayush Shah, Senior Engineer, Dow Polyurethanes

      There is a need for coatings that have the rapid return to service of current polyurea/polyurethane spray applied coatings while having enhanced chemical resistance of epoxy coatings. To that end, we have developed a fast cure, hydrophobic coating with enhanced chemical resistance. This hydrophobic coating is based on The Dow Chemical Company’s proprietary hydrophobic polyols and prepolymers. In this paper, we will compare the chemical performance of the new hydrophobic coating against regular polyurea spray elastomers and epoxy coatings typically used for chemical resistance applications. The novel rapid return to service hydrophobic coating has chemical resistance properties similar to epoxy materials while significantly outperforming regular polyurea/polyurethane based coating materials for aqueous acids such as HCl and H2SO4, bases such as NaOH as well as other aqueous based chemicals.

    Tuesday, April 12
  1. 9:30am - 10:00am

    • Session 6.2: Isocyanate-Free Polyurethane Technology for Automotive Refinish Applications

      Nahrain Kamber, Ph.D. TS&D Group Leader, Dow Coating Materials

      Two component polyurethanes are used in a variety of industrial coating applications due to their excellent weatherability, toughness, and chemical resistance. When formulated as ambient cured systems, traditional two component polyurethanes typically must balance cure speed for pot life. This paper describes automotive refinish applications of a novel ambient cure, two component isocyanate free polyurethane coating technology based on the reaction of polycarbamates with polyaldehydes. One significant benefit is the ability to decouple pot life from cure speed, allowing for the development of coating formulations with longer pot life without sacrificing fast hardness development and quick dry time. For the applicator, these attributes provide faster return to service, higher production throughput and less material waste. Additional coating benefits, including good chemical and humidity resistance and fast sandability, are described for automotive refinish primer surface coatings at conventional and low VOC levels. Examples of isocyanate-free PU clear coats are also presented.

  2. 11:00am - 11:30am

    • Session 5.4: Acrylic Epoxy Hybrid Coatings for Commercial and Institutional Wall Applications

      Art Leman, Technical Service and Development Manager, Dow Coating Materials

      Two component waterborne acrylic epoxy coatings have been used for some time in commercial and institutional wall coatings applications such as in schools and hospitals. Institutional wall coatings must be higher performing than traditional architectural coatings, as they must stand up to harsher cleaning products and practices, as well as higher traffic and utilization. New developments in acrylic epoxy hybrid polymers have been developed to offer improvements in wallcoatings properties such as adhesion, abrasion resistance, chemical resistance, impact resistance, color and gloss retention. The obtained hybrid can be formulated as a viscosity stable 2K coating system by mixing pigments and fillers with waterborne acid-functional acrylic as part A and the acrylic epoxy hybrid as part B. This paper will also present test results and applications data on the coatings performance of acrylic epoxy hybrid using different stoichiometric ratios of acid to epoxy. A model and mechanism for a 1K formulation will be presented and compared to the formulation for a 2K system. This paper will also highlight the effect of other formulating ingredients such as coalescent selection and functional additives for their impact on applied properties of the acrylic epoxy hybrid system for wallcoatings.

    Wednesday, April 13
  1. 10:30am - 11:00am

    • Tutorial 14.3: Ultra-Low VOC Waterborne Alkyd Coatings with Solventborne Alkyd Performance

      Erin Vogel, Ph.D. Research Scientist, Dow Coating Materials

      Solvent borne (SB) alkyd resins are widely used in industrial coatings because of their excellent gloss, adhesion, and wetting properties as well as compatibility with other resin types. In many regions, however, the consumption of SB alkyds has diminished as stringent environmental regulations have driven adoption of low VOC systems. In some instances, waterborne (WB) alkyd emulsions have replaced SB alkyd systems; however, they typically do not offer the same performance. Dow has developed technology to disperse short, medium, and long oil alkyd resins with minimal surfactant and no polymer modification. Pigmented WB alkyd coatings formulated with these resins demonstrate comparable properties to those of conventional SB alkyd coatings. For example, short and medium oil alkyd dispersions formulated into ultra-low VOC (<10 g/L) coatings give thin films (1 mil) that display excellent gloss, adhesion, flexibility, and solvent resistance as well as superb salt spray resistance (>300 hr.).

  2. 12:30pm - 1:00pm

    • Tutorial 16.6: Tuning Toughness and Flexibility in Liquid Applied High Solids Epoxy Coatings

      William Heaner, New Product Development, Dow Polyurethanes

      The inherent brittleness and lack of flexibility of high solids, liquid epoxy coatings presents challenges to meet the growing opportunities for them in multiple market segments. Various additives or flexible hardeners may be used to overcome some of these issues, but most of them compromise the barrier properties of the coatings or the processability of the formulated system. In addition, existing solutions do not have a dual functionality; they are either toughening agents or flexibilizers. An alternative approach to improve flexibility and toughness with one product can be realized with the use of a flexible, reactive additive that will phase separate during cure. Controlling the concentration, size, and composition of the phase domains allows a spectrum of toughness and/or flexibility to be targeted. The influence of backbone structure, additive loading, and cure speed on phase morphology and mechanical performance will be discussed along with case studies on an optimized system.